Review on 🔌 ARRIS SB6121 SURFboard 4x4 DOCSIS 3.0 Cable Modem -Retail Packaging- Black by Richard Rosa

BEFORE CONNECTING:1. Write down your comcast2 account number. MAC address of the modem3. Modem serial number (Tip: You can use Android barcode scanner to easily mail yourself these numbers without typing them in manually.) This is ONLY the serial number, not the "customer serial number".4. Make sure your network connection has DHCP enabled (should be enabled by default, but of course make sure you can't google it when offline). First via the modem before you connect or disconnect anything. To connect this you need to call/IM/chat with Comcast so they enter the MAC and SN into the system on their side and then the billing specialist will add the new modem to your account and list it for $0.00 . Once everything is clear, you can connect the modem - make sure you turn off your existing modem so your laptop doesn't try to connect to the old Wi-Fi. Then you must FIRST connect the modem **directly** to the PC (DHCP enabled) and allow the connection. Launch a browser, and despite your previous discussion with them, you probably need to "activate" your service. Enter your login credentials (didn't work for me) or the account number and phone number you noted earlier. It will inform you that it will take up to 45 minutes, in fact it is less than 20, click "Continue" when prompted. , it may not restart. Keep testing the internet in a new tab and you'll be online in minutes. Actually, you don't need a reboot. Now to connect the TP Link router, connect the modem to the WAN port of the router and then connect the computer to another port. At this time you do NOT have internet access. However, you can switch to the router's IP address 192.168.0.1, admin, admin. Now follow the instructions in the box for the TP Link router, for Comcast/xfinity you will need to click the button to clone your PC's MAC address to the router (as instructed in the router's instructions - there are several leaves, this will be a separate brochure) because Comcast appears to be blocking the modem for a single device IP address on activation. (You can also set up your router and WiFi password while in settings. Bookmark the settings page). At this point, you may or may not need to turn off your devices. That's it, you should be ready to go. Conclusion: Connect the modem directly to the PC, activate the service. Connect the modem to the router, the router to the PC. Change router settings to clone MAC address.